Provenance of heavy and clay minerals in bottom sediments of Green Lake, an Amazonian fluvial lake in Brazil

Autor: Anderson C. MENDES, Ângela B. DANTAS, Anne Caroline S. RIBEIRO, Livaldo O. SANTOS, Kamilla C. MENDES, Dorsan dos Santos MORAES, Rodolfo M. ALMEIDA

Publikováno v: Acta Amazonica, Vol 50, Iss 2, Pp 159-169 (2020)

ABSTRACT Studies on provenance of minerals in Amazonian rivers focus mostly on suspended sediments, while processes that control bottom-sediment production and distribution are still little known. We determined the provenance of the bottom sediments

Externí odkaz: https://doaj.org/article/42a3d9ea633344fab0be33559d0823df

New sodium activated vermiculite process. Testing on Cu2+ removal from tailing dam waters

Autor: Dorsan dos Santos Moraes, Gisele Tavares Marques, Claudio Nery Lamarão, Augusto F.S. Rente, Elizabeth Maria Soares Rodrigues

Publikováno v: Journal of Hazardous Materials. 366:34-38

New sodium activated vermiculite was used as Cu2+ adsorbent on water simulating the composition of tailing dam of a copper mine in the north region of Brazil. Starting material was vermiculite applied as thermal insulator and adsorbent of Sigma-Aldri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84bf3efdf5806d2c63d9263aae3101cc
https://doi.org/10.1016/j.jhazmat.2018.11.086

Joint synthesis of Zeolite A-LDH from mineral industry waste

Autor: José Augusto Martins Corrêa, Liliane Nogueira da Silva, Suzianny Cristina Arimatéa Santos, Dorsan dos Santos Moraes

Publikováno v: Applied Clay Science. 161:163-168

This study evaluated the use of waste from the copper concentration process and kaolin processing for the combined synthesis of Zeolite A and layered double hydroxide (LDH). The synthesis occurred in two stages: synthesis of LDH by coprecipitation an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::adecd24b94bad4e57feb603484b2b8b8
https://doi.org/10.1016/j.clay.2018.04.018

Bentonite functionalized with propyl sulfonic acid groups used as catalyst in esterification reactions

Autor: G.N. Rocha Filho, José Roberto Zamian, Carlos E.F. da Costa, Dorsan dos Santos Moraes, Rômulo Simões Angélica

Publikováno v: Applied Clay Science. 51(3):209-213

The main objective of this work is the functionalization of bentonite from the Amazon (region) by the grafting of propyl sulfonic acid groups to catalyze the esterification reaction of acetic acid and 1-propanol. Functionalization was accomplished by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::170e4f3504b22d47b8475a3071d2f02a

Characterization and Distribution of Pyrogenic Carbon in a Fraction of Archaeological Black Earth from Caxiuanã

Autor: Vanda Porpino Lemos, Dorsan dos Santos Moraes, Cláudio Nery Lamarão Moraes, Milena Carvalho de Moraes

Publikováno v: Journal of the Brazilian Chemical Society v.26 n.8 2015
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Repositório Institucional da UFPA
Universidade Federal do Pará (UFPA)
instacron:UFPA
Journal of the Brazilian Chemical Society, Volume: 26, Issue: 8, Pages: 1664-1673, Published: AUG 2015

This study aims to determine the atomic ratio of O/C in an archaeological black earth (ABE) profile of the Ilha de Terra site, a region of Caxiuanã in the Pará State, Brazil, to determine the types of pyrogenic carbon (PyC) particles and to infer t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6179a86be6902b3c7452255c03e0d668
https://doi.org/10.5935/0103-5053.20150140